About SolarBridge
SolarBridge is an Energy & Utilities company based in Austin (United States) founded in 2004, and was acquired by Enphase Energy in June 2018. Microinverters and monitoring solutions for solar systems are manufactured. SolarBridge has raised $326 million across 8 funding rounds from investors including SunPower, Enphase Energy and DOE. Its focus areas include Energy, Solar Energy, Hardware Developer and Balance of Systems. Its competitors include Fronius, Ampt and Power-One; 1 of its 3 listed competitors has raised funding.
Company details
SolarBridge Technologies was established in 2004 and is headquartered in Austin, United States. Microinverters and related monitoring solutions are produced for the solar energy sector. A primary research and development facility is operated in Champaign, Illinois. The company, previously known as SmartSpark Energy Systems, focuses on advancements in distributed solar power technologies and system integration. Operations emphasize hardware design and performance optimization for residential and commercial applications.
- Headquarters Austin, United States
- Stage Acquired
- SectorsEnergy & Utilities
- Website solarbridgetech.com
- Social LinkedIn X Facebook
- Acquired by Enphase Energy (Jun 2018)
- Total Equity Funding$326M (USD)
in 8 rounds
- Latest Funding Round$42M (USD), Series E
Mar 2014
- InvestorsSunPower
& 10 more
- Acquired by
Funding Insights of SolarBridge
SolarBridge has successfully raised a total of $326M across 8 strategic funding rounds. The most recent funding activity was a Series E round of $42 million completed in March 2014. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $326M
- Total Rounds 8
- Last Round Series E β $42M
- Investors Count 9
All 8 funding rounds of SolarBridge with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Mar 2014 | $42M | Series E | β | Constellation Technology Ventures | |
| May 2012 | $250M | Series D | β | J.F. Shea Co | |
| Feb 2012 | $1.1M | Grant | β | β | |
| Sep 2011 | $2.61M | Grant | β | β | |
| Sep 2011 | $2.3M | Grant | β | β | |
| Jun 2011 | $19M | Series C | β | Rho Capital Partners, Battery Ventures | β |
| Apr 2010 | $15M | Series B | β | β | |
| Oct 2007 | Series A | β | β |
11 investors in total: 11 institutional.
Investors in SolarBridge
SolarBridge has secured backing from 11 investors, including institutional and venture fund investors. Prominent investors backing the company include SunPower, Enphase Energy and DOE.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Early-stage tech startups are invested in by Rho Capital Partners. | rho.com | New York, United States | ||
Climate companies are invested in by this venture capital firm. | preludeventures.com | San Francisco, United States | ||
Early-stage energy startups are invested in by Constellation Technology Ventures. | technologyventures.constellation.com | Baltimore, United States | ||
Investments in technology companies are conducted globally by Battery Ventures. | battery.com | |||
Early- to growth-stage startups are targeted for venture capital investments. | oup.vc | Bala Cynwyd, United States | ||
Infrastructure development services are provided by J.F. Shea Co. | jfshea.com | Walnut, United States | ||
Energy sources and policies are managed by the DOE. | 1977 | energy.gov | ||
| texasone.us | ||||
Micro-inverters and energy storage systems are manufactured for solar applications. | 2006 | enphase.com | Fremont, United States | |
Silicon-based solar PV modules are manufactured for diverse applications. | 1985 | sunpower.com | San Jose, United States |
Investor details for SolarBridge
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
Timeline of SolarBridge
5 dated milestones of SolarBridge across 14 years, from founding to its latest funding, stage changes and deals.
- Founded SolarBridge is founded.
- Funding First funding round.
- Funding Latest funding round, Series E, of $42.0M.
- Exit Acquired by SunPower.
- Exit Acquired by Enphase Energy.
Competitors of SolarBridge
SolarBridge has 3 listed competitors in our database, 1 of them funded. They include Fronius, Ampt and Power-One.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| fronius.com | 1945 | Indiana, United States | BoS units and grid-integrated inverters for solar plants are developed. | |||
| ampt.com | 2007 | Fort Collins, United States | $35M | Ampt is focused on DC power management for PV systems. | ||
| power-one.com | 1973 | Camarillo, United States | Energy-efficient power conversion solutions are designed and manufactured. |
Detailed competitors of SolarBridge
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
- Benchmarks
- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of SolarBridge
Websites that share an audience with SolarBridge (solarbridgetech.com).
Websites whose visitors overlap most with SolarBridge. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| enecsys.com | 100% | View details | |||
en.wikipedia.org | en.wikipedia.org | 98% | β | ||
| enphase.com | 97% | 569K | #91,206 | View details |
Top companies in Renewable & Sustainable Energy
3 companies that operate in the same segment as SolarBridge (Renewable & Sustainable Energy) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Utility-scale renewable energy projects are developed by Enel X. | 2001 | Boston, Massachusetts, United States | USD 168.67 M | |||
Sustainable energy solutions are developed and operated worldwide. | 2000 | Chicago, Illinois, United States | USD 575 M | 1,276 | ||
Solar energy services are provided to residential customers nationwide. | 2007 | San Francisco, California, United States | USD 296.98 M | USD 2.96 B | 11,060 |
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Related news about Solarbridge
Complete news archive for SolarBridge
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Frequently Asked Questions about SolarBridge
SolarBridge was founded in 2004 and raised its 1st funding round 3 years after it was founded.
SolarBridge is headquartered in Austin, United States. It is registered at Austin, Texas, United States.
SolarBridge is a funded company, having raised a total of $326M across 8 funding rounds to date.
SolarBridge Technologies was established in 2004 and is headquartered in Austin, United States. Microinverters and related monitoring solutions are produced for the solar energy sector. A primary research and development facility is operated in Champaign, Illinois. The company, previously known as SmartSpark Energy Systems, focuses on advancements in distributed solar power technologies and system integration. Operations emphasize hardware design and performance optimization for residential and commercial applications.
SolarBridge has 11 investors. Key investors include SunPower, Enphase Energy, DOE, J.F. Shea Co, and Rho Capital Partners.
Yes. SolarBridge was acquired by Enphase Energy in June 2018.

